That and the characters are obviously not on the paper. They don't have a papery texture, and they kind of look like they're floating a few centimeters away from the paper. And the perfectly white background. And the obviously stock image (relating to the last one).
EDIT:
Also, the image quality is different between the characters and the paper.
[schilcote] It doesn't have to be good, it just has to not be "wow is that the only thing you could think of" bad